500kV单相发电机变压器直流偏磁下振动试验研究  

Vibration Research of 500 kV Single-phase Generator Transformer under DC Bias Test

作　　者：方善臣 欧小冬 林刚 黄佐流 李英 王丰华[3] 

机构地区：[1]大唐观音岩水电开发有限公司,云南昆明650000 [2]特变电工衡阳变压器有限公司,湖南衡阳421007 [3]上海交通大学,上海200030

出　　处：《水力发电》2016年第4期77-80,共4页Water Power

摘　　要：对某500 kV单相发电机变压器开展进行了直流偏磁试验下的振动特性研究,对变压器空载下和运行在8%~10%额定电流下不同直流工况时振动信号进行了分析研究,总结得出有无直流偏磁时变压器各振动测点信号的变化规律,以及直流分量作用下振动信号频谱的分布规律。The vibration characteristic of a 500 kV single-phase generator transformer is studied by DC bias test. The vibration signals are analyzed for the transformer operated under no-load and 8%- 10% rated current conditions respectively. The vibration changes of different measuring points under the operation conditions with or without DC bias are summarized, and the distributions of vibration signal singular spectrum and power spectrum under the action of DC component are also obtained.

关 键 词：500 kV单相发电机变压器 直流偏磁 振动试验 奇异谱和功率谱 

分 类 号：TM312[电气工程—电机]